What is a clearfix?

If you don’t need to support IE9 or lower, you can use flexbox freely, and don’t need to use floated layouts. It’s worth noting that today, the use of floated elements for layout is getting more and more discouraged with the use of better alternatives. display: inline-block – Better Flexbox – Best (but limited browser … Read more

Is there a float input type in HTML5?

The number type has a step value controlling which numbers are valid (along with max and min), which defaults to 1. This value is also used by implementations for the stepper buttons (i.e. pressing up increases by step). Simply change this value to whatever is appropriate. For money, two decimal places are probably expected: <label … Read more

WebSockets vs. Server-Sent events/EventSource

Websockets and SSE (Server Sent Events) are both capable of pushing data to browsers, however they are not competing technologies. Websockets connections can both send data to the browser and receive data from the browser. A good example of an application that could use websockets is a chat application. SSE connections can only push data … Read more

What is the difference between and ?

<section> means that the content inside is grouped (i.e. relates to a single theme), and should appear as an entry in an outline of the page. <div>, on the other hand, does not convey any meaning, aside from any found in its class, lang and title attributes. So no: using a <div> does not define … Read more

How to create a checkbox with a clickable label?

Method 1: Wrap Label Tag Wrap the checkbox within a label tag: <label><input type=”checkbox” name=”checkbox” value=”value”>Text</label> Method 2: Use the for Attribute Use the for attribute (match the checkbox id): <input type=”checkbox” name=”checkbox” id=”checkbox_id” value=”value”> <label for=”checkbox_id”>Text</label> NOTE: ID must be unique on the page! Explanation Since the other answers don’t mention it, a label … Read more

How to apply CSS to iframe?

Edit: This does not work cross domain unless the appropriate CORS header is set. There are two different things here: the style of the iframe block and the style of the page embedded in the iframe. You can set the style of the iframe block the usual way: <iframe name=”iframe1″ id=”iframe1″ src=”https://stackoverflow.com/questions/217776/empty.htm” frameborder=”0″ border=”0″ cellspacing=”0″ … Read more

How to overlay one div over another div

#container { width: 100px; height: 100px; position: relative; } #navi, #infoi { width: 100%; height: 100%; position: absolute; top: 0; left: 0; } #infoi { z-index: 10; } <div id=”container”> <div id=”navi”>a</div> <div id=”infoi”> <img src=”https://appharbor.com/assets/images/stackoverflow-logo.png” height=”20″ width=”32″ />b </div> </div> I would suggest learning about position: relative and child elements with position: absolute.